SpaceX Supply Ship Arrives at Space Station

A shipment of much-needed groceries and belated Christmas presents finally arrived Monday morning at the International Space Station.

Launch of the SpaceX rocket

Credit SpaceX

The SpaceX company's supply ship, Dragon, pulled up at the orbiting lab two days after its liftoff. Station commander Butch Wilmore used a robot arm to grab the capsule and its 5,000 pounds of precious cargo, as the craft soared more than 260 miles above the Mediterranean.

The space station's six astronauts were getting a little low on supplies. That's because the previous supply ship - owned by another company - was destroyed in an October launch explosion. NASA scrambled to get replacement equipment aboard Dragon, as did school children who rustled up new science projects.

Then Dragon was stalled a month by rocket snags; it should have gotten to the space station well before Christmas.

Mission Control joked about missing not only the December shipment date, but Eastern Orthodox Christmas on Jan. 7 as well.

"We're excited to have it on board," Wilmore said. "We'll be digging in soon."

He's especially eager to get more mustard. The station's condiment cabinet is empty.

NASA is paying SpaceX and Orbital Sciences Corp. for shipments. Orbital's rockets are grounded until next year, however, because of its launch accident. SpaceX is picking up as much slack as it can. Russian and Japan also plan deliveries this year.

SpaceX is still poring over data from Saturday's rocket-landing test, the first of its kind.

After the first stage of the Falcon rocket peeled away as planned following liftoff, it flew back to a giant platform floating off the Florida coast. The guidance fins on the booster ran out of hydraulic fluid, however, right before touchdown, and it landed hard and broke into pieces.

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SpaceX has successfully launched another resupply mission to the International Space Station months after a competitor in the private space-launch business suffered a catastrophic lift-off that resulted in the unmanned rocket's destruction.

SpaceX called off its planned flight to the International Space Station early Tuesday because of rocket trouble.

The unmanned Falcon rocket was supposed to blast off before sunrise. But the countdown was halted with just over a minute remaining. The soonest SpaceX can try again is Friday morning.

Officials said the problem was with the motors needed for second-stage rocket thrust steering. If controllers had not aborted the launch, computers would have done so closer to flight time, NASA launch commentator George Diller said.